/*
 * Copyright 2012-2018 the original author or authors.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *      https://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package cn.springcloud.gray.bean.properties.source;

import java.util.function.Predicate;
import java.util.stream.Stream;

/**
 * A filtered {@link IterableConfigurationPropertySource}.
 *
 * @author Phillip Webb
 * @author Madhura Bhave
 */
class FilteredIterableConfigurationPropertiesSource
        extends FilteredConfigurationPropertiesSource
        implements IterableConfigurationPropertySource {

    FilteredIterableConfigurationPropertiesSource(
            IterableConfigurationPropertySource source,
            Predicate<ConfigurationPropertyName> filter) {
        super(source, filter);
    }

    @Override
    public Stream<ConfigurationPropertyName> stream() {
        return getSource().stream().filter(getFilter());
    }

    @Override
    protected IterableConfigurationPropertySource getSource() {
        return (IterableConfigurationPropertySource) super.getSource();
    }

    @Override
    public ConfigurationPropertyState containsDescendantOf(
            ConfigurationPropertyName name) {
        return ConfigurationPropertyState.search(this, name::isAncestorOf);
    }

}
